The following are the dates that local school districts begin school by county:

On September 5th in:

Madison County: DeRuyter Central, Chittenago Central

Onondaga County: Baldwinsville Central, Jamesville-DeWitt Schools, Onondaga Central, West Genesee Central, Fabius-Pompey Central

Cortland County: Cincinnatus Central, Homer Central, McGraw Central

Cayuga County: Auburn City Schools, Southern Cayuga Central, Union Springs Central

Oswego County: Fulton City Schools, Central Square Schools, Sandy Creek Central

On September 6th in:

Madison County: Hamilton Central, Oneida City Schools

Onondaga County:  LaFayette Central, Liverpool Central

Cortland County: None Known At This Time

Cayuga County: None Known At This Time

Oswego County: Hannibal Central,

On September 10th:

Madison County: None Known At This Time

Onondaga County: Manlius-Pebble Hill School

Cortland County: None Known At This Time

Cayuga County: None Known At This Time

Oswego County: None Known At This Time

*Note: Many School Districts Websites Didn't Contain Updated Calendars.

If you know the opening date of a school district that's not listed on here just reply and I'll gladly add it to the list.