PG County schools are in trouble
The Prince George's Co. School system has been all over the news for the last year or more. The State Board of Ed actually dissolved the school board and appointed their own. For the sake of your children avoid it. Calvert County has the best reputation for schools in the area but that is probably further than you want to commute to Indian Head but northern Calvert is close to Upper Marlboro.
There is an elementary school in northern Charles Co. which has been rated a "Blue Ribbon School." That school is Malcolm Elem. I went there about 25 yrs ago and at that time there was an open air drug market about a mile away, but they stayed away from the school, we never had needles on the playground or any of that, I guess because the dealers sent their kids there too. The police have pretty much shut down that market now and when I was looking at houses last year, everything I heard was that Malcolm was the best. There are even teachers there that were there 25 years ago. I think that says a lot about the commitment of the teachers to the students and of the school to supporting the teachers. The middle school which they go to leaves something to be desired though. Benjamin Stoddart Middle used to be the best, but I don't know about recently.
We ended up moving to Mechanicsville, in northern St. Mary's Co. The school my kids will go to, Lettie Dent, is one of the few in St.M's that isn't overcrowded (a big deal here) and it has a great rep. The schools in the southern part of St.M's have more overcrowding.
The problem is, all these places with good schools also have the most expensive houses, except for the area closest to Malcolm, where the drug market used to be, which has some really run down houses. In St. M's, houses of any sort are hard to come by unless you are prepared to pay. We paid in the low 160's for our house last year and a similar size house down the street just sold for $203. Someone I know in Calvert bought a very tiny, kind of remote house 2 yrs ago for $98,000 and sold last summer for $138k
Hope this helps.