New York homeschool checklist for this year

Things to do, with their deadlines

Within 14 days of starting, if you start after the school year has begun
Send the superintendent your written notice of intention to instruct at home.
Source: NYSED: Home Instruction Questions and Answers; 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)
Within four weeks of the district's reply, or by August 15, whichever is later
Send the completed individualized home instruction plan (IHIP) on the form the district sends you: the child's name, age and grade, the materials for each required subject, your quarterly report dates and who teaches.
Source: NYSED: Home Instruction Questions and Answers; 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)
On the dates in your IHIP
Send each quarterly report: hours of instruction that quarter, the material covered in each subject, and a grade or a written narrative for each subject.
Source: NYSED: Home Instruction Questions and Answers; 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)
With the fourth quarterly report
File the annual assessment: a listed standardized test, or (grades 1 to 3, and every other year in grades 4 to 8) a written narrative by an approved person.
Source: 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)

All year
Teach the subjects New York names: arithmetic, reading, spelling, writing, the English language, geography, United States history, science, health education, music, visual arts, physical education, bilingual education or English as a second language (where needed).
Source: 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)
All year
Keep count of the days and hours. The substantial equivalent of 180 days of instruction each school year. The cumulative hours of instruction are 900 hours per year for grades 1 through 6 and 990 hours per year for grades 7 through 12. Absences are allowed on the same basis as the district's policy for its own students.
Source: 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)
All year
Keep attendance records and make them available to the district on request; NYSED says there is no legal obligation to keep any other records, and recommends keeping evidence of the program, the child's achievement and correspondence with the district. Each quarter, send the district a quarterly report on the dates in your IHIP: hours of instruction that quarter, the material covered in each subject, a grade or a written narrative for each subject, and an explanation if under 80 percent of the planned material was covered.
Source: NYSED: Home Instruction Questions and Answers; 8 NYCRR 100.10, Home instruction (New York Codes, Rules and Regulations)

Keep a copy of everything you send, and of any acknowledgement you get back, with the date.
Start simple records on day one: the days you teach, the books you read and a few samples of work in each subject. They help if you move, return to school or apply to college.