They may have poor balance or poor endurance for long distances. They will normally use a wheelchair as well. Others will use a wheelchair most or all of the time. This means access to classroom, play area, toilets, tuckshop etc. Often extra room is needed to manoeuvre within the classroom.
Some children can quite easily crawl or bottom up and down steps.
Whether this is appropriate depends on the age of the child, where the steps are, how the child feels etc. This should be encouraged as much as possible. Advice on this should be sought from parents or from a therapist. It is important that small children who use a wheelchair should not spend all their time in the wheelchair when other children are playing or working on the floor. Being down on the floor encourages social inclusion, as well as involvement in the same activities as other children.