Just my two cents………..Kindergartner age children are extremely adaptable and would adapt to any school environment. Their needs are simple, a safe and healthy home environment free from alcohol and drug abuse. I would think the number one thing you and your children need more than staying in the same school because of kindergarten would be love and support from family and friends.
Do you have family in the area? Do you have close friends you could confide in?
Living with a controlling person to the point of not seeking help for oneself (al-anon meetings) is abuse and a scary kind of abuse at that.
Alcoholism is progressive so is controlling behavior, it couldn’t hurt for you to reach out to a domestic violent hot line 800-799-SAFE (7233) to see what resources are available to you in your area.
Keep posting, keep reading, keep coming back!!!