How to get into Speech Pathology masters programs?

I am an undergrad majoring in speech pathology. I want to work in the schools so most of my volunteer/work experience are with those ages 4-18. I don't have any experience working with the elderly and will only continue working on projects in the schools. would this reflect badly when I apply to a masters program, even though I'm convinced I won't be working with the elderly population? any other advice to greater my chance in getting into a masters program would greatly be appreciated.