Yes!
The rule is:
A student who is a member of a school athletic, scholars’ bowl or debate squad effective Tuesday following Labor Day through Friday preceding Memorial Day may not participate as a member of an outside team or as an independent competitor in the same sport, scholars’ bowl or debate activity.

The purpose of the KSHSAA is:
This Corporation is organized not for profit and it is organized and shall be operated exclusively for the following educational purposes:
(A) To contribute to the education of the middle/junior and senior high school boys and girls of Kansas by:
(1) Administering a program of interscholastic activities, festivals, clinics and contests among member
schools.
(2) Elevating the standards of good sportsmanship and encouraging the growth of good citizenship, not only for middle/junior and senior high school boys and girls, but also of adults and all others who come into contact with school activities.
(3) Protecting member schools from exploitation by special-interest groups.
(4) Encouraging pride in scholastic achievement as a fundamental basis for a well-balanced activity program.
(5) Serving the best interests of all member schools by influencing the proper type of legislation or any other desirable means.

The KSHSAA Mission Statement is:
Mission Statement

Goals that Influence Student Learning Outcomes
The Kansas State High School Activities Association advocates principles and sponsors services which assure that the state’s middle level and high school students gain a balanced preparation for life, work, and post-secondary education.

Principles on Which Intended Outcomes are Based
Principles advocated by the association are promotion of scholastic achievement as a fundamental basis for a well balanced activity program, and development of effective citizenship through the practice of good sportsmanship.

Services to Accomplish the Mission
Services provided by the association are:
1. sponsorship of educational workshops, seminars, conferences and publications designed to inform and positively
influence students, parents, educators and community members in accordance with organizational principles;
2. administration of a program of interscholastic activities, festivals, clinics and contests among member schools;
3. protection of member schools from exploitation by special interest groups; and
4. communication with policy-making bodies to influence decisions consistent with association principles and operational standards

Yes!
In past years there have been several organized attempts from the Kansas City and Wichita areas to introduce legislation in both the Kansas House and Senate to address the "Outside Competition" rules enforced by KSHSAA.

Also, there was a lawsuit filed several years ago by a group of Wichita area parents which did affect several KSHSAA changes. I will have to research my records, however as I recall, the decision also clearly stated participation in KSHSAA sponsored activities was not a stucent's "RIGHT" but was a "PRIVILEGE"