20 Year Old Illegal Alien High School "Student" Had Loaded Gun

From the Des Moines Register:

A 20-year-old student arrested with a loaded handgun after a fight at North High School is a gang member who came to the United States from Mexico two years ago, Des Moines police said Wednesday.

Schools Superintendent Nancy Sebring said Marcelino Aparicio, who denied the alleged gang affiliation and told authorities he was 17, will be expelled under the district's zero-tolerance policy on weapons.

All you have to do is go out to the Iowa Courts Online Trial Search and look up his name. Marcelino Aparicio has five entries as of today: three with a birthdate of February 1, 1986 (he's almost 21 years old!), one with a birthday of February 1, 1989, and a very recent one with a birthdate of January 1, 1987 (probably just a marker) when he was pulled over without a valid driver's license.

Several questions here:

First, what is an almost-21 year old doing in high school?

Second, why is an adult illegal alien attending high school? Why doesn't he go to night school to learn Spanish and get a B.

Also, some of the earlier entries with the February 1, 1986 birth date indicate Marcelino Aparicio had been charged by police in April of 2003. That's 3 1/2 years ago, considerably longer than the two years the Des Moines Police Department believes he's been in the United States.