Pre Registration for Brown Early Childhood Center Open Apr 8th @ 12:00am - May 31st @ 11:59pm Pre Registration is now open at Brown Early Childhood Center. If your child will be 5 years old before September 1st, 2021 register online for kindergarten. If your child will be 4 years old before September 1st, 2021 register online for Preschool. You can register at http://portales.schoolmint.net