PT players may play high school. They can not be full time players, drop to PT status for high school and return to DA BUT a player could be PT in the fall, play high school and then be "promoted" to FT in the spring.
From the above link:
Part-Time Players Clubs may add up to an average of 10 Part-Time (PT) Players, averaged across all club’s age groups (U-13 through U-18/19), which will count against roster totals, according to the Part Time Player Policy. The 2019- 2020 policy is available at
http://www.ussoccerda.com/administrative_resources.
A Part-time Player (PT) is a player who is rostered with a DA Club or their affiliate Club that is not ready to contribute at the Academy level full time. This player is not playing consistently and/or enough minutes in DA games to fully develop;
therefore, the player is eligible to play games outside of the DA program.
The PT player consistently trains 3-4 times a week (depending on their age group) and must train with both teams every week. The PT player is required to train a minimum of 1x every week with the DA team, in addition to their non-DA team. For example, the player trains 1-2x every week with the DA team and 1-2x every week with the non-DA team. PT players can play in a maximum of 12 DA games. Note, at U-13 and U-14 age groups, any PT player added to the game day roster will count as a game played.
To supplement their Academy game minutes, the PT player is eligible to also play games outside the DA on a non-DA team within the club or in an affiliate club as part of his/her individual development plan. PT players must still follow the Academy play-to-rest ratio.
PT players may not be registered PT with any two different Academy clubs at the same time during the same Academy season (Sept-July). PT players may only change their status to full-time once during the Academy season and they may not return to PT player status. Furthermore, a PT player does not automatically garner 25 full-time status after participating in their twelfth game. The club must submit their intentions in writing to the Academy Office to move the player to full-time status. Players that have played in the maximum twelve (12) games, are not eligible to continue to play in Academy games, unless the club indicates the desire to move the player to full-time status and the player status has been updated to full-time by the Academy Central Office. Note, continued usage of a PT player after their 12th game could cause a club to forfeit games due to the use of an ineligible player. Additionally, PT players are eligible to participate in the Academy Playoffs or Academy Championships.