Advice so far should be very helpful. I'd like to add just a slight bit of thinking to the process.
This subject is like a slam-bam to consider. Like going into a black hole and guessing how things will turn out coming out of said hole. So, I would suggest considering yourself, your son/daughter, both of you, like a marketing strategy for a new product or service. And like any marketing strategy, someone has to want "it" because of an added value to whatever it is the buyer sees filling.
Ask yourselves these questions:
do you know who and what the potential buyer is - college, university, placement group, etc.?
do you have the background on who and what this buyer has attracted in the past?
are your credentials the same, or better, as those holding roster spots currently?
are you placing a "fair" value on yourskills to be truly sought after?
can you distinguish between just being a number, or are you really being sought after for your talent?
have you reviewed the turnover of players that stay with the institution(s) interested in you?
are the institutions interested in you in an area that has a bumper crop of talent - if so, why contact you?
are rosters made up of those players within a fifty (50) mile radius of those institutions contacting you?
Also, are you considering yourself marketable? Are you thinking ... "wow, someone wants me to pay ball!" Well, don't think that way. Why? If you're good enough to be contacted, someone must see something in you that is needed and wanted. Going into a "contact" with someone(s) that gives you the attitude of.. "we've got plenty of kids that apply here," is probably right, BUT, that should tell you how little they, and others, think about the follow up to purpose for contacting you.
Don't act smug or full-of-it. Just be mindful that contacts have a purpose behind them. You and the party(s) that your corresponding with should be on equal footing and see each other at eye level, not one look up or down at each other.
One last thing, if you really have the talent that is wanted and recognized, keep your thoughts and expressions to yourself. Being known that you're considering a particular choice over all others can narrow your future prospects. I personally have seen this dash the hopes and good intentions of a lot of eligible talent.
My sincere best wishes with your baseball experience.