Thanks! I had an idea about the team season but the other ITA stuff is really jumbled.The actual NCAA season runs from January to May. The first team matches start in January, and lead to the team championships in May, followed by the NCAA singles and doubles championships. Those are the official NCAA events.
The NCAA, however, lets the Intercollegiate Tennis Association (ITA) run college tennis, and the ITA runs several other events through the year. The ITA refers to these events as national championships, but they are not recognized by the NCAA. Still, these events are sort of like "major titles".
So, the schedule is something like this:
ITA All-American (National Singles and Doubles Tournament. Very large field.)
Small College Championships (Singles and Doubles Tournament for DII, DIII, NAIA, and JUCO players. Winners at each level play in the Small College "Super Bowl" for a berth in the Intercollegiate Indoors)
ITA Regional Championships (12 Singles and Doubles Tournaments across the country, winners get into the Intercollegiate Indoors)
ITA Intercollegiate Indoors (Indoor Tournament in Singles and Doubles. Hard to qualify for. Also features a non-Division 1 singles player and doubles team.)
ITA Kickoff Weekend (15 4-team single elimination tournaments at campus sites. Winners qualify for the Team Indoors)
ITA Team Indoors (16 team tournament. Winning team is the National Indoor Champion)
NCAA Championships (64 team tournament, first two rounds at campus sites, last 4 rounds at one site. Winning team is the NCAA Champion. Followed by a 64 man singles tournament and 32 team doubles tournament for the NCAA Singles and Doubles titles.)
There are some summer tournaments run by the ITA, but they aren't as highly regarded because the top college players play pro events in the summer.