The 4-phase approach is described in the NY Forward Reopening Guide 
https://forward.ny.gov/   “Recreation” and “education” were originally in Phase 4, which could be in early-July, based on the Westchester and Long Island starting dates for Phase 1. 
All businesses must prepare a safety plan in the
 format shown here. (thanks to Sara Levin Horseshoe Harbor YC for the tip!) and also read and affirm the guidelines for their specific category of business.  
On June 2 Gov. Cuomo announced that summer day camps may open June 29. He also issued an Executive Order allowing low-risk, outdoor recreational activities and businesses providing such activities to open in regions that have met the public health and safety metrics required for Phase one - full text and links 
are here.