Iowa's first year of the current weights was the 1988-89 season.
Talking about weight allowance...when I was in high school in the mid 1970s, we certified the first weekend in December, then got two pounds Dec. 15, two pounds Jan. 1 and two more on Feb. 1. So if you were a 145-pounder, by the time Sectionals started you weighed in at 151...heaven.