One copy must be carried in the vehicle at all times. The other copy must be surrendered to the tag agent or Oklahoma Tax Commission. The last 3 numbers of the VIN must be on the Insurance Verification Form. The state checks all interstate health certificates with date and result of EIA test on certificate within 6 months prior to entry. At the present time, Oklahoma places no restrictions on the entry of houseplants by individuals.
Principal minerals are petroleum, natural gas, coal, iodine, helium, gypsum, clay, sand and gravel.
Chief agricultural products are beef cattle, sheep, hogs, poultry, milk, wheat, hay, sorghum and other grains, peanuts and cotton. The law increased teacher pay, reduced elementary class sizes to a maximum of 20 students and mandated a new statewide curriculum based on results. Between 1990 and 1993, funding of local schools rose 53 percent. Public schools in Oklahoma are operated by local boards of education, under accreditation standards established by a State Board of Education. Attendance is compulsory between the ages of 6 and 18, though schools are required to provide kindergarten programs for all children age 5.