Greenvale Park Elementary will be open for summer office hours from 7 a.m. to 3:30 p.m. Monday through Friday, through Thursday, June 21.  After June 21, if families would like to register their children for school or have questions, they should contact the Northfield Public Schools District Office at 507.663.0600.  The Greenvale Park office will open again on Thursday, August 2 from 7 a.m. to 3:30 p.m.