In California it depends on the district. Plain and simple. The more affluent your district the higher your pay. When I started in my district they only paid $36,000 to start (that is after 5 total years of college not counting the two years of clearing said credential) but they paid your benefits whereas other districts paid slightly higher but you had to pay for some of your benefit costs. Now 7 years later, our district still starts out at $36,000 but if you've got more than two people on your benefits and avoid Kaiser then you pay $500 per month in benefits. That is a $6,000 cost which means those teachers start at $30,000. If you go Kaiser then it's $2500 cost per year.
In comparison about 40 miles south where the median average of income is over $100,000 then I would start at $40,000 with all my benefits covered now. The thing is its hard as hell to get anyone to move and after a while it's the devil you know then the devil you don't which influence whether or not you move.
In another district only 10 miles away the teachers start at $38,000 but pay all benefits which costs $9,600 a year which really means they start at about $28,000.
Interestingly enough due to state standards and enforcements of adoptions with companies if someone in San Diego adopted the same thing as I did in NorCal it'd be the same teaching schedules and ways of implementing the base teaching. In all three districts I mentioned we all teach essentially the same thing.
To put it in perspective if I was paid like a babysitter which is $12 an hour and I have essentially 30 kids in a period that means each period I'd make $360. Most teachers do 5 periods a day which means that'd be $1800, average of 22 working days per month means it'd be $39,600. Multiply that by 9 months and we're talking $356,400 even if they took 30% (most teachers fall in the 24% tax bracket) I would essentially still be making about $250,000 a year.
So yeah, considering that most people don't like dealing with their own _______ kids, let alone deal with 150 ____ers every day with amazing senses of entitlement and that you have to make sure that you are preparing for the next grade level and on top of it have to deal with parents who are so far removed from their own kids that even video evidence of them doing something isn't enough, I'd say we don't get paid enough. Not to mention the hours upon hours after workhours are done that you have to grade papers, prepare lessons, deal with useless collaboration meetings and remember all those kids names and parent's names (seriously they get pissed if you don't remember them...) as well as pull the weight of those lazy ***** who do nothing but whose kids' scores will bring down your grade level or department scores, etc.