It is a shadow day. They usually go until noon, sometimes later. They can wear any clothes. My daughter wore khakis and a sweater. They pair them up with another girl in the same grade and they go to those girl's classes. They will make sure you see the good classes, not many specials. They have lunch and if they are lower school, go to recess. The girls LOVE the girls that come and shadow. They will make her feel very welcome. So do the teachers. My daughter was absolutely against leaving her public but after 3 shadow days at other schools, she loved Holton the best and was so excited to apply there. She talked non-stop about her day when I picked her up. We have been there 3 years and love it. Good Luck!