KJCT-TV reports the vote was 3-1.
Kamryn shaved her head to help Delaney Clements get through chemotherapy that made her go bald.
School officials first told Kamryn she violated the dress code and couldn't return, although they backed off and said she could attend classes at least temporarily.
Tuesday's vote appeared to settle the matter.
School officials said the dress code was designed to promote uniformity and a non-distracting environment. They said exceptions could be made under extraordinary circumstances.
