The governing board of any school district may sell any real property belonging to the school district or may lease for a term not exceeding 99 years, any real property, together with any personal property located thereon, belonging to the school district which is not or will not be needed by the district for school classroom buildings at the time of delivery of title or possession. The sale or lease may be made without first taking a vote of the electors of the district, and shall be made in the manner provided by this article.