What is the rule for how long your hair can be in wrestling high school this year?

For the first time ever my son was told he had to cut his hair today for a 4A regional. I thought we did away with the rule on how long your hair had to be or if they had to wear a hair net?

2.M Wrestler Inspection
Prior to competition it will be necessary for host managers (including regional and state tournament managers) to provide for
wrestler inspection by the referees, to be held 45 minutes prior to the beginning of the match or tournament. The inspection
should be handled in the following manner:
1. All wrestlers participating in the match or tournament shall be present.
2. Officials shall check appearance, uniform, taping, equipment, etc., as per Rule 4, Sections 1, 2, 3, 4. A check shall be
made to make sure all wrestlers have been inspected before their appearance on the mat.
* The hair in its natural state, shall not extend below the top of an ordinary shirt (collar) in the back and on the sides,
the hair shall not extend below earlobe level; in the front, the hair shall not extend below the eyebrows.

I had to look that up because I also thought the hair length rule was dropped, in kids it has been. I copy and pasted the above information from the kshsaa 2017-18 handbook.

Thanks