“PISA emerged from a series of other international efforts to assess school achievement that arose after the Second World War. The main precursor organization was the International Association for the Evaluation of Educational Achievement (IEA), an offshoot of UNESCO, which conducted a 12-country pilot study in 1959, followed by the First International Mathematics Study in 1964, the First International Science Study in 1971, the second version of each of these studies in 1982 and 1984, and the Third International Mathematics and Science Study (TIMSS) in 1995 (IEA, n.d.).” (Labaree, 2019, pg 3)