John Jabson
I used to work at a real estate brokerage and the vast majority of agents made almost nothing and all except one that made good money were full-time. We had around 70 agents, so not a small office.
As others have said this is definitely an area where females dominate. All of our top producers were females but there were some very successful men at other offices. In fact the owner was a man and had several other offices, an incredibly successful real estate sales team, along with a number of other business. His wife was his partner though, lol.
With that said you are in a position where you could have a good network between other teachers and parents. A decent flow of leads is key to make any money. Agents are really in the business of marketing themselves, not selling homes, marketing homes, negotiating, or helping buyers or anything else.
It doesn't take a whole lot to get started so I say go for it. Just go into it with your eyes open. If you have any interest in investing it can be very helpful to have your license.