I think that if you just wear something simple, yet flattering will be fine. Our school nurse (she's about 60, but young looking) wears nice slacks or pant suits to school. Something comfy. She never knows if she'll be on the floor helping someone or on a stool. I was always told to dress "yourself". Don't over do it because if they hire you thinking you dress one way, and then you come in looking a different way...they may wander if you put on a front. JMO
