I never thought I'd see this, but this little footnote in the NCAA rules came into play just now in the Texas-Texas A&M game. This is from Rule 8-1-1 in the NCAA rulebook.
The point value of scoring plays shall be:
Touchdown 6 Points
Field Goal 3 Points
Safety (points awarded to opponent) 2 Points
To u c h d o w n 2 Points
Field Goal or Safety 1 Point
I added the italics. On a botched extra point try by Texas, the Aggies recovered the kick at their one, then fumbled it back into the endzone, where they recovered it and fell on it. That gave the Longhorns a one-point safety.
Note that in college ball, the defence can run a conversion back for a two-point "touchdown;" I never knew they could be tackled for a one-point safety.
I've never seen that before and am unlikely to ever see it again.