@Starrider:
I have a healthcare background so I've found it much easier to be accepted as a volunteer for some of the wrestling teams at the colleges in my area
The "weigh-in" as a semi-public event operated by high schools and colleges is essentially a relic of the past. It lives on in pop culture consciousness mainly through its depiction in movies and as public spectacle for the boxing-based entertainment industry.
What has taken the place of the public weigh-in for colleges and high schools is an automated system that focuses on practical and scientifically based weight management programs which are more private, paperless, and cost-effective. Like any secure system of recording and accessing information, that means only those in the immediate coaching and parenting circles — not those with just healthcare backgrounds — have access to a student's weight or any process of determining their weight.
This information is used by a broader system which validates a student's right to wrestle by issuing regionally-based certification. The NCAA took the lead in cobbling together framework for this broader-based system over 20 years ago. They slowly expanded it through patchwork design to high schools and colleges across the country, although it may be noted that participation is not mandatory.
The need for this newer system became evident in 1997, when three college wrestlers were killed at the end of a 35-day period engaged in unsupervised, unsafe weight management practices just prior to their weigh-in.