In 2018 two teens were arrested for planning a mass shouting at their school in Uvalde Texas. Their plan was to carry out the shooting in their senior year which would be 2022. The teens were 13 and 14 years old. The youth were evaluated by mental health professionals and the older of the children was released to his mother. Here is the statement made by the Uvalde school system in 2018:

Uvalde CISD issued a statement on Thursday:
Our school district is committed to the safety and education of all our students and we want to clearly communicate about safety issues when they arise. One of our Morales Junior High students was experiencing a crisis. Upon rendering aid and support, the student revealed a future plan to conduct a school shooting in the year of 2022. With the type of detailed information that was revealed by the student to law enforcement and confirmed in their investigation, the student has been arrested and will not be returning to our school. Our school district has a strong partnership with our local law enforcement agencies and emergency responders. They share our commitment to student safety, and we are working closely with them to ensure all information is thoroughly evaluated and our school is as safe as possible.
We ask our parents to assist us in reminding their child/children of the importance of telling a staff member if they ever become aware of a plan to harm individuals or of a weapon at school. The STOPit app may be utilized by parents or students to inform administration of any inappropriate behavior. In this way, we are all working together to keep our schools safe.

So, they had 4 years to be groomed by professionals on how to carry it out. On his 18th birthday Salvador purchased to long guns.

Here is the article from 2018

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