http://iscoresports.com/

If I want to be able to track season stats separately from cumulative stats (high school career for example) do I create a new team for each season and them merge them together at season's end?

You can use a single team from season to season and use Leagues to separate the stats by season.

See this link in our FAQ for more information on league usage:

http://iscoresports.com/baseball/kb/faq ... season.php

or this link in the iScore documentation on league usage:

http://iscoreleagues.com/manual/#h.2645an2iuahn