A South Carolina mother was hauled off to jail Friday for allegedly inciting a student fight — while across the country, a 15-year-old was robbed at gunpoint inside a Maryland high school bathroom. The system locks up the parent. It can't lock down the school.

Erianna Salmond, 38, was arrested by Richland County sheriff's deputies and charged with contributing to the delinquency of a minor after investigators determined she helped instigate a fight involving four girls at Blythewood High School, according to WIS. Deputies were called around 8:30 a.m. to break up the altercation. The circumstances remain under investigation.

Meanwhile, at Northwest High School in Germantown, Maryland, a 15-year-old student was robbed at gunpoint in a bathroom Thursday afternoon, CBS News reported. The victim handed over his cash after another student pointed a handgun at him and demanded money. Three teens were taken into custody. A K9 unit recovered a loaded P80 handgun with an extended magazine — a ghost gun with no serial number — in a nearby wooded area. The 15-year-old suspect faces first-degree assault and firearm charges as a juvenile. Khalil Ingram, 17, and Tayvion Williams, 18, were charged as adults with firearms offenses.

Two stories, one problem: schools that cannot maintain basic order. When a parent in Blythewood allegedly escalated a conflict between students, the system had a ready answer — criminal charges for the mother. When a student in Montgomery County brought an unserialized ghost gun into a school bathroom and stuck it in another kid's face, the system had no answer at all until after the crime was done.

The question nobody in authority wants to answer is what drives a parent to insert herself into a school fight in the first place. Parents don't intervene when schools handle business. They intervene when schools don't — when kids are left to sort out violence on their own, when administrators look the other way, when the institution has already failed. Salmond's conduct may warrant charges, but those charges don't fix the environment that created the conflict.

And the Germantown armed robbery proves the environment is rotten. A ghost gun with an extended magazine made it into a high school bathroom. No metal detector, no resource officer, no security measure stopped it. The victim surrendered his money before any adult knew what was happening. Three teens are charged, but no administrator will face accountability for failing to keep a weapon out of the building.

The pattern is clear: schools fail, kids get hurt or hurt each other, and the system prosecutes individuals while the institution walks. In Blythewood, they booked a mother. In Germantown, they booked three teenagers. Nobody books the school.

How many more parents will be pushed into impossible situations — and then punished for reacting — before the institutions that created the chaos are held to account?