I'm thinking of signing up for a Krav Maga class soon.
Where do they offer these classes?
Krav Maga
Krav Maga (; , "lit." "contact combat") is a military self-defence and fighting system developed for the Israel Defense Forces (IDF) and Israeli security forces derived from a combination of techniques sourced from boxing, wrestling, aikido, judo and karate, along with realistic fight training. 
Krav Maga is known for its focus on real-world situations and its extreme efficiency. It was derived from the street-fighting experience of Hungarian-Israeli martial artist Imi Lichtenfeld, who made
common to observe regular trainees grading only once a year from P3 and up.
Once in G2, students also do simulated "real" fighting with protective gear.
Some organizations encourage sparring as soon as students start training. They train full contact with minimal gear in both stand-up and ground fighting, using semi-professional MMA rules for safety. Sparring should always be supervised and monitored carefully by a qualified instructor.
Krav Maga for civilians Competition for civilians.
Some Krav Maga organizations do not support a competition