Lathrop, California. Lathrop is a city located in San Joaquin County, California, United States. At the 2010 census Lathropâs population was 18,023. The city is located in Northern California at the intersection of Interstate 5 and SR 120. Contents.
The lowest composite ACT score possible is 1, while the highest ACT score possible is 36. Other factors will help you determine what a good ACT composite score is for you, and weâll look at those in a minute.
An ACT score report includes a âCompositeâ score, which is an average of 4 subject scores: one in English, one in Math, one in Reading and one in Science. The highest score you can earn on each of these four sections is a 36, so the highest composite is thus also 36.