Cleanliness questions

My daughter's are 5 and 2 and my husband came home today and said our oldest 5 doesn't need a bath every night before school, I disagree. Although her hair is very thin and doesn't get oily I think of school germs, lice etc. Now my 2 year old because I'm a stay at home mom unless she gets dirty that wipes or warm wet wash cloths doesn't clean she doesn't get a bath but every other day or every two days. What do you all think is acceptable for my 5 year old?