There is no winning streak in the tournament as Ky the 2012 champion did not make the tournament this year.
The current longest winning streak in boys high school basketball, is True Divine Word Academy of St. Louis, MO. They are a small christian academy.
Clarkton School of Discovery.
In 2013 it was Bladenboro Middle School!
Fairfield Lady Eagles in Fairfield Montana as of 3/10/14 have won 101 consecutive basketball games.
Syracuse beat Kansas 81-78 to win the 2003 NCAA men's basketball tournament, marking the school's first tournament crown.
Loyola in 1963.
I played in one of the longest, if not the longest, high school basketball game in Kansas history, at the Dodge City "Tournament of Champions" in 1982. My team, from the small town of Mullinville (1981 Kansas Class 1A State Champions) played Silver Lake (1981 Kansas Class 3A State Champions) in a 6-overtime game in the 4th-6th place consolation contest. I have often wondered since if other, longer games have been played. The longest high school basketball game I'm aware of was the 1964 Indiana high school state regional tournament game between Swayzee and Liberty Center. The game lasted nine overtime periods and was finally won by Swayzee, which had beaten Oak Hill a week earlier in the sectional tournament's championship game in three overtimes. At that time, there were no class divisions in Indiana high school basketball. All schools (large and small) were included in one class.