Because of the many different options that parents may have in choosing a school for their child to attend, many of them will choose to contact a service or organization that provides information on school's performance and other data. Parents will often want to get information on school's in their area in order to make an informed decision on which school will be best for their child. Services and organizations that provide school information will usually be able to supply statistics on specific school's average class size, test score rankings in different subjects, and any extra services they may offer.