head bands and cute updos will be your friends at first! I workout regularly and I wear the naughty hair bands, the ones with grippy stuff. I know it damages my hair but I hate how my hair slips out otherwise.
I work in education as well. Fortunately, the atmosphere is pretty casual and I'm not the only teacher that goes to school with crunchy hair! I always bring a normal hair band for the days when the hair isn't working. My default is a messy bun.
Medium texture, normal porosity, normal elasticity, very weak waves.
shampoo: Redken Fresh Curls
rinse out: CJ CR, TN
jellies: UFD's CM, KCCC
gels: CJ CQ, BRHG