1999 Dodge Caravan 99 Dodge Grand Caravan Won't crank. Jus

Check engine light on for app 2 weeks. Engine was running fine while sitting waiting for coffee fix to be handed through drive in window, lights flickered on radio and instruments then engine died. Tried to restart, nothing. No clicking, no turning, just dead. Cleaned off battery posts, nothing. While in accessory, the power locks work, but windows do not. Battery good. Bright green light. After it sat for a week, started fine then died 2 minutes later. Dead again. Towed to high school shop. After a week, visited and woke up high school auto shop student out from my back seat and tried starter, starter fine. Recharged battery, engine still dead, not turning. High school teacher perplexed.