Yes it is. Hurdling is an attempt by a player to jump(hurdle) with one or both feet or knees foremost over an opponent who is contacting the ground with no part of his body except one or both feet.
It is considered a personal foul and is a 15 yard penalty. -Football official
Yes
No, as that result would be a foul
Yes. Play is stopped the moment the defender crosses into the neutral zone. Technically, this is called "encroachment." There is no "offsides" foul in high school football.
Yes, a technical foul is assessed as a personal foul in high school basketball.
Technically, under NFHS rules hurdling another player is illegal, though the foul is rarely called. Having said that... um, no, there are no rules that specifically dictate "how high a running back can jump." Presumably the limitations presented by gravity are sufficient.
no
yes
Depends on the level. In high school and college, you foul out on your fifth foul. In the NBA, you foul out on your sixth foul.
There is no such thing as an intentional technical foul in high school basketball. Fouls that would give a team 2 free throws and the ball to inbound include an intentional foul, a technical foul and a flagrent foul.
They can decline the penalty, yes... but there would be no reason to decline it, because in high school this is a dead ball foul and the play is immediately blown dead.
No...a high school football is smaller than a college football