High school sports are very popular in the United States and as a result some of the teams get to be quite well known. There are not a lot that you would call household names by any stretch but amongst serious fans they do have a reputation. There are a couple of ways that this can happen, you can win a lot of championships or you can produce a lot of great players.
There are few high school sports teams that become particularly famous, for the most part they are limited to being well known in their local area. This is especially true with high school football which in smaller towns is actually a Friday night tradition. Even adults who don't have children as students at the school will show up for the games which can draw quite large crowds. In some cases the local television stations will broadcast the games although it is more likely that they will just show the highlights on the news afterwards.
In most cases the top of the line for high school football teams is the state championship game. This is a big deal in most states and will attract a large number of spectators. In most states there are a small group of schools that will dominate the state championship with one of them winning it most years. These are usually the schools that have the largest enrolment but that is not always the case.
Basketball tends to work similar to football although it does not really attract the same level of interest. Nevertheless there are some schools that have basketball programs that tend to win the state title more often than the other schools in their area.
One situation where there are a few schools that become well known is when it comes to hockey. The popularity of hockey in the United States tends to be regional so there are students who will enrol at a private high school that has a strong hockey program if they don't have a good one near where they live. This is not normally allowed in sports like football and basketball. As a result you get schools like Shattuck St. Mary's in Minnesota which are well known at the national level, at least amongst people who watch hockey.
There is another way that high school sports teams can become well known and this is to produce a lot of college players. There are just some schools that are well known for producing players that go onto play well in college. These tend to be schools that have the largest enrolments of course but it also tends to have a regional element to it. For example there are several schools in California that produce a lot baseball players and some in Kansas that produce basketball players. The result is that these schools tend to be better known than others but none of them are particularly famous.