The plan, start to finish

The girls start on September 2.

They are behind on their vaccines and we are catching all the way up, one dose a week, never more than one per visit. New York writes a rule for exactly this. Every step below has a date.

Today to the first day 0 days

Where this actually stands

The twins have two DTaP doses each. New York day care requires four. The fourth cannot be given until at least six months after the third, so no schedule on earth reaches four doses by September 2. That is arithmetic, not a missed deadline.

New York plans for this. A child who has started every required series and has the remaining appointments booked is classified as in process, and the regulation says a student in process must be allowed to attend school. Not may. Must.

At one dose per week, six of the seven series finish by mid-September. The seventh is DTaP, and its last dose is fixed by a six month interval, not by how often we go. Everything in between is appointments already on the calendar.

01

The dose schedule

One dose per child per visit, one visit per child per week. Seven Mondays gets us there. The exact order is set on Monday once we have both records, following one rule: any series with no doses at all goes first, because that is what eligibility on September 2 depends on.

Week 1 . Monday, August 3
MMR
First for a reason. It starts the 28 day clock that varicella has to wait out, and it is the longest overdue of the two live vaccines.
Week 2 . Monday, August 10
DTaP, third dose
Overdue. The gap after the second dose is only four weeks and that passed long ago. This dose also sets the clock for the fourth.
Week 3 . Monday, August 17
Polio
Three doses required for pre-K, with short intervals between them.
Week 4 . Monday, August 24
Hib
At 15 months or older, one dose satisfies the requirement outright.
Week 5 . Monday, August 31
Varicella
Exactly 28 days after the MMR, which is the minimum gap between two live vaccines given on separate days. This is the last dose before school starts.
Wednesday, September 2
First day
Every series started, the rest booked in writing. They walk in eligible, on time, with everyone else.
Week 6 . Week of September 7
Pneumococcal
One dose at 24 months or older closes it completely. Labor Day is that Monday, so this one lands Tuesday or later in the week.
Week 7 . Monday, September 14
Hepatitis B
The third dose. Every spacing rule is already satisfied at their age. Six of seven series are now complete.
December 2026, or February 2027
DTaP, fourth dose
The one date we cannot move. Six months after the third dose is February 10. The state's own footnote says a dose given at least four months after the third does not need repeating, which would make December 10 valid. Worth asking their provider. This dose ends in-process status and makes them fully complete.
02

What "in process" requires

Two conditions, and only the first has to happen before September 2.

Condition one

One dose in every series

At least the first dose of each required vaccine. DTaP already has two, so DTaP needs nothing before the first day. Any series still at zero is what the five August visits cover, earliest first.

Condition two

The rest booked, in writing

Appointments at the intervals the CDC catch-up schedule sets, written out by the pediatrician and handed to the school with the medical form.

"Students who do not have all of the required immunizations for their age but qualify as a student in process must be allowed to attend school."
10 NYCRR 66-1.3(b). Day care is covered: 66-1.1(a) defines "school" to include a child caring center and nursery school.
03

Free to go slowly. Bound to keep what we book.

Those are two different things and the difference is the whole plan. We are getting them fully vaccinated, one dose at a time, carefully, under Dr. Rosen's supervision. Nothing external is forcing a finish date. What is binding is narrower, and worth knowing exactly.

Free

The finish date

No rule requires the series to be complete by a given month. DTaP alone runs to early 2027 because of a six month interval, and that is fine. We go as deliberately as their doctor thinks right.

Binding

The appointments we book

Once an appointment is on the schedule the school holds, it has to be kept. A missed one ends in-process status and exclusion follows within 14 days. The freedom is in the pace we choose, not in the dates once chosen.

Which means

Book conservatively, then keep it

Better a slower schedule we will certainly hold than a fast one we might miss. The written plan is a commitment, so it should be one we can keep for eighteen months.

The proof

Five that carry the plan, quoted exactly. The rest are folded underneath. Where the wording is the state's guidance restating a regulation rather than the regulation itself, it says so.

The school must let them attend.
"Students who do not have all of the required immunizations for their age but qualify as a student in process must be allowed to attend school."
NYSED guidance, citing 10 NYCRR §66-1.3(b). Must, not may. The sentence the whole plan rests on.
What Dr. Rosen's office has to hand us.
"Parents/guardians must present proof of future appointments such as an appointment card, receipt, or other statement from the provider's office that includes the date(s) of next appointment ... for completion of the next dose(s) of required immunizations."
NYSED guidance. The most useful line here: a card, a receipt, or a statement on their paper, carrying dates. Not a letter of intent, and not a list we wrote ourselves.
"In process" means started, plus booked.
"... a child has received at least the first dose in each immunization series ... and has age appropriate interval appointments to complete the immunization series according to the [ACIP] Recommended Child and Adolescent Immunization Schedule."
10 NYCRR §66-1.1(j). The same definition carries the 28 day gap between live vaccines, which is why MMR and varicella sit four weeks apart in the schedule above rather than back to back.
Miss a booked appointment and the status ends.
"... the student is no longer in process and must be excluded from school within 14 days after the minimum interval identified by the ACIP catch-up schedule."
10 NYCRR §66-1.1(j)(4). This obligation runs for eighteen months, which is the whole argument for booking a pace we can certainly keep rather than a fast one we might miss.
The one real exposure is an outbreak.
"... exclusion of students not fully immunized as ordered by the Commissioner of Health, or their designee, during the outbreak of a vaccine preventable disease for the vaccine(s) the student does not have."
10 NYCRR §66-1.10(a). In-process status does not protect against this. It is the honest downside of a paced schedule, and the argument for taking MMR first rather than last.

Read the authorities in full, with the statute, every citation and the sources

04

Why the school can accept this

Intent on its own is not a category New York recognises. There is no parental-statement route, and since the religious exemption was repealed in 2019 the medical exemption is the only one left. What the regulation asks instead is whether the child has appointments booked to finish the series. Has, not plans to. A dated appointment is intent in the only form the law can read: third party, on a calendar, and checkable.

She cannot say no

In process is protected

A student who qualifies must be allowed to attend. The regulation even defines "susceptible student" to include children who are in process, so the category is one the school is expected to have.

She cannot say yes on a promise

The school is audited

Little Nest is OCFS licensed and files an annual immunization survey with the state. If asked why a partially immunized child was attending, a parent's word is not the answer. The file is.

Which means

We hand over paperwork, not a request

Asking her to accept something invites a no. Giving her the documentation of a status that already exists does not. The classification gets named, not negotiated.

"... has age appropriate interval appointments to complete the immunization series according to the ACIP Recommended Child and Adolescent Immunization Schedule."
10 NYCRR 66-1.1(j), the definition of in process. The appointment is the requirement.

The two documents that do it

Two signed medical forms.
OCFS-LDSS-4433, completed by the provider, showing every dose to date and establishing that each required series has at least a first dose.
A written appointment schedule from the pediatrician.
Every remaining dose through February 2027, dated, ideally on practice letterhead. This one carries the weight. Written by us it is a parent's plan. Written by them it is a clinical one, and a clinician applying ACIP to a specific child is exactly what the regulation defers to.
Nothing else.
No letter of intent, no parental statement. They add nothing legally and only muddy a clean file.

Where it would actually break

A series sitting at zero doses.
Not in process, full stop. No paperwork covers a series never started, which is the entire reason the records get pulled before the schedule is set.
A schedule that exists only verbally.
It has to come from the office in writing. A booking made over the phone and never documented is not evidence.
A missed appointment.
In-process status ends and exclusion follows within 14 days after the minimum interval. This is an ongoing obligation through February 2027, not a hurdle cleared once in August.
The honest soft spot: one dose a week is slower than a standard catch-up.
Nothing in the plan breaks an interval, because ACIP intervals run within a series and the spacing here is across different ones. But every series is already overdue, so a strict reader could ask why seven weeks when one visit was available. The answer is the provider's written plan, which is why it comes from them and why any series at zero goes into the first August visits.
05

What each vaccine needs

DTaP is the only series confirmed at two doses. The other six get checked against their records on Monday, and the schedule above reorders if anything is at zero. At 25 months, four of them close completely with a single dose.

DTaPComplete Feb 2027 Four doses required, two on record. Third dose August 10, fourth six months later.
MMROne dose closes it Pre-K requires one dose, given on or after the first birthday.
VaricellaOne dose closes it Pre-K requires one dose. Must fall 28 days or more after the MMR.
HibOne dose closes it At 15 months or older, a single dose satisfies the requirement.
PneumococcalOne dose closes it One dose at 24 months or older and no further doses are required. They are past 24 months.
PolioOne more dose Three doses required for pre-K, with short intervals between them.
Hepatitis BOne more dose Three doses required. All the spacing rules are already satisfied at their age.
06

Everything else in one place

The authorities, in full

The statute is New York Public Health Law §2164. It is implemented by 10 NYCRR Part 66, Subpart 66-1. Quoted text below is verbatim, and where a line is the Education Department's statement of a rule rather than the regulation's own words, it says so.

10 NYCRR §66-1.1(a) . who is covered
"Includes public, private, or nonpublic child caring center, daycare agency providing day care of children defined in this section, nursery school as defined in this section, kindergarten and any elementary, intermediate, or secondary class or school building."
The definition of "school." Little Nest is both a nursery school and a child caring center, so Subpart 66-1 applies to it in full. This is the threshold question and it is not a close one.
10 NYCRR §66-1.1(j)(1) . the definition of in process
"a child has received at least the first dose in each immunization series required by §2164 of the Public Health Law (except in the case of live vaccines in which a child should wait 28 days after one live vaccine administration before receiving another live vaccine, if the vaccines were not given on the same day) and has age appropriate interval appointments to complete the immunization series according to the Advisory Committee on Immunization Practices (ACIP) Recommended Child and Adolescent Immunization Schedule for ages 18 years or younger"
Two elements, joined by "and." Note that the 28 day live vaccine rule is written into the definition itself, not left to clinical practice. If MMR and varicella land closer than 28 days apart on separate days, the second dose fails the definition, not merely the schedule.
10 NYCRR §66-1.3(b) . the attendance right
"Students who do not have all of the required immunizations for their age but qualify as a student in process must be allowed to attend school."
This is the Education Department's statement of the rule, citing §66-1.3(b), rather than a verbatim quotation of the regulation's own text. The operative word either way is must. Admission is not discretionary once the definition is satisfied.
NYSED guidance . what proof actually counts
"Parents/guardians must present proof of future appointments such as an appointment card, receipt, or other statement from the provider's office that includes the date(s) of next appointment with a healthcare provider or facility for completion of the next dose(s) of required immunizations in accordance with the Catch-up Immunization Schedule."
The single most useful sentence for us. An appointment card, a receipt, or a statement from the office, carrying dates. It has to come from the provider, and it has to be dated. A verbal booking is not proof, and neither is a schedule we typed ourselves.
NYSED guidance . the school's own duty
"The school should follow and track in-process students' immunization status and confirm follow through on appointments and scheduling of subsequent appointments as needed."
Holly is expected to track this, so expect to be asked again through the year. That is her obligation being discharged, not scepticism about us.
10 NYCRR §66-1.1(j)(4) . how it ends
"If a student does not receive subsequent doses of vaccine in an immunization series according to the age appropriate ACIP catch-up schedule, including at appropriate intervals, the student is no longer in process and must be excluded from school within 14 days after the minimum interval identified by the ACIP catch-up schedule."
The guidance adds that appointments must be "met within 14 days of when the subsequent dose is due, confirmed with healthcare provider written documentation." So the obligation is not just to book. It is to attend, on time, and to keep producing the paper.
NYSED guidance . exemptions
"Public Health Law §2164 only permits exemptions to immunization requirements for medical reasons."
Direct confirmation that the religious exemption no longer exists in New York, repealed in 2019. A medical exemption must be renewed annually on the NYSDOH Medical Exemption Statement and signed by a physician licensed in New York State, certifying a contraindication consistent with ACIP guidance. The Little Nest handbook and the 2014 vintage state medical form both still print religious exemption language, which no longer has legal effect.
10 NYCRR §66-1.10(a) . the one real limit
"Schools should inform parents/guardians of students in process of the school's policy and procedures for exclusion of students not fully immunized as ordered by the Commissioner of Health, or their designee, during the outbreak of a vaccine preventable disease for the vaccine(s) the student does not have."
In-process status protects attendance in ordinary conditions. It does not survive a declared outbreak. During an outbreak the Commissioner of Health can order the exclusion of children not immunized against that specific disease, and in-process children are within scope for the vaccines they have not yet had. This is worth knowing locally: Rockland County had one of the country's largest measles outbreaks in 2018 and 2019, which is part of what drove the repeal of the religious exemption. It is the strongest practical argument for taking MMR early in the sequence rather than late.

Primary sources, both public: NYSDOH publication 2370, "2026-27 School Year New York State Immunization Requirements for School Entrance/Attendance," revised June 2026. NYSED, "Immunization Guidelines for Schools," last updated June 2024, which is where the quoted regulatory text and departmental guidance above are drawn from.

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