Each state has a different homeschool law and a different state homeschool organization who can help with questions about it. Find the laws for nearby states below and be sure to reach out with any questions:
For the full process, see How To Start Homeschooling in Delaware
Delaware Department of Education General Non-Public School Info
In Delaware, homeschools are one type of “Nonpublic school” under the purview of the Department of Education. This link provides general information for Delaware Nonpublic Schools.
https://education.delaware.gov/families/k12/homeschools-and-private-schools/
Delaware Annual Enrollment/Attendance Reporting
Delaware Department of Education annual reporting page for enrollment and attendance: https://launchpad.classlink.com/ddoe
Delaware does not require a specific number of days or hours for homeschools, but they do require reporting how many “days” each student was “in school.”
Delaware Homeschool Statute
Scroll down to 14 Delaware Code § 2703A.
https://delcode.delaware.gov/title14/c027/sc01/
Maryland Homeschool Statute
Md. Code Ann., Educ. § 7-301(a).
https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=ged§ion=7-301
Maryland Homeschool Regulations
Code of Maryland Regulations (COMAR) 13A.10
§§ 10.01.01 to .05
13A.10.01.01 Home Instruction Program.
13A.10.01.02 Voluntary Participation in Standardized Testing.
13A.10.01.03 Noncompliance with Requirements.
13A.10.01.04 Placement in Public School.
13A.10.01.05 Home Instruction Under Supervision of Nonpublic School or Institution.
Notice of Intent
To begin homeschooling in Maryland, a Notice of Intent form prescribed by the State Department of Education must be submitted to the “local superintendent at least 15 days before the beginning of a home instruction program.” Each district has a contact person, e.g. Cecil County’s can be found here: https://www.ccps.org/Page/162
For Maryland questions, reach out to our friends at:

Pennsylvania Department of Education Home Education Program Info
https://www.education.pa.gov/Policy-Funding/BECS/Purdons/Pages/HomeEducationProgram.aspx
Pennsylvania Homeschool Statute
24 P.S. § 13-1327.1.
For Pennsylvania questions, reach out to our friends at:

New Jersey Department of Education Frequently Asked Questions: Homeschooling
https://www.nj.gov/education/safety/nontraditional/faq_homeschool.shtml
New Jersey “equivalent instruction elsewhere” Statute
N.J. Stat. Ann. § 18A:38-25
For New Jersey questions, reach out to our friends at:

Homeschool Legal Defense Association (HSLDA)
HSLDA is a Christian legal organization that supports homeschooling families across the country and the world. HSLDA has been instrumental in defending the right to homeschool from the infancy of the modern homeschooling movement to today. Although homeschooling in Delaware has not seen the challenges that other states have faced, by joining HSLDA you are supporting others nationally and gaining a resource should an issue ever arise.
HSLDA has more detailed state legal information, including state requirements at https://hslda.org/legal
Tri-State members also can receive a discount on HSLDA membership.
