HS Soccer Game Day Roster Size

I do not believe that there are any limits to roster size in high school.

There’s no limit. In fact, players can be added to the roster before and at any time during the game. Moreover, a player who scores a goal and is not in the roster can be added to the roster. The goal is allowed. 

Sorry to hijack the thread but I have questions about HS soccer. A friend's daughter who is a freshman made Varsity at a decent school and it looks like she'll be starting games. Could this mean she has a bigger chance of making a higher level club team in the fall? Like, are HS games scouted by club coaches at all? If not, I guess at least she'll get better by playing with better/older players.

Are parents allowed to coach loudly at HS games? My daughter is not in HS yet but when she is, she might be on JV or Varsity with someone who has an extremely annoying parent, and I'm already worrying about this parent poisoning things like has happened before.

Club coaches are not coming to high school games to scout. Except for the traditional powerhouses in the state, there is no comparison between high school and the top club teams. Same is true for college coaches.

Unless the coaches/administrators or someone else from the school puts a stop to it, it can certainly happen. In fact, this often does happen. Let me rephrase:  it most likely WILL occur. 

Now, if the coaching turns into "Profanity, degrading remarks, and intimidating actions directed at officials or competitors....." those can certainly be dealt with by removal. The partial quotation above comes straight from the GHSA sportsmanship statement that is supposed to be read to spectators prior to the start of each match. 

It depends on the club and the coach, but more than likely just being on a Varsity team won't make a difference come club season.  As you point out, it might help the player because they are potentially playing with better players around them, but that doesn't mean much to the club coaches.

Club coaches might swing by from time to time, but that is more likely because they have a specific player they want to see play.  Such as someone was injured and they want to see how they are recovering, or they know of someone new and they want a better look before tryouts.  However, most club coaches say they need to train HS out of players, so they don't put a lot into what happens during the HS season.  Interestingly, the most club coaches I have seen at games are actually coaching.  There are more club coaches that are HS teachers / coaches, or even Community Coaches than you would imagine.

As for parents coaching, this is going to be on a school by school basis.  Some schools don't say a word about while others specifically ask that the coaches be allowed to coach while the parents cheer.

High School is always an interesting dynamic.  You will see a lot of schools with ECNL and Rec. players on the same team.  You will see some schools with ECNL players on JV, for whatever reason.

The schools with ECNL kids on JV are because they are unable to compete on varsity. Their skill level can match, absolutely. Physically, they can not compete. If you put them there, at a top high school they would get injured. Yes, there are always a few exceptions where a freshman can physically compete at a larger competitive HS. But most can't. At small schools they can, or HS's that don't compete for state at high level. This includes the premise is that if you have multiple freshmen at JV that are ECNL you probably have more than a handful that are upper classmen. And more than a handful of upper classmen playing ECRL or SCCL. 

Here is a crazy thought, I doubt if you took the top ten HS's last year, you could identify which kids are ECNL or not with more than a 50% accuracy. You would 100% be able to identify the top 20% of ECNL players. But I think where you would struggle with bottom group of ECNL is not different than the top group of ECRL, etc. Heck, hasn't Dalton won like 8 of the last 10 state championships and they don't even have a club team -- beating all the ECNL players in ATL?