Level

The esper Level (強度) is Academy City's categorization for esper abilities, which determines how much a student has advanced in the Power Curriculum Program, levels are determined through the System Scan.

Levels
They are divided among the following stages accordingly with their strength:

Other Notes
In Academy City, about 60% of the students fall into the Level 0 category and there are only seven that are classified as Level 5. Furthermore, with the implication that most Level 0s are individuals who "possess powers, but those are of no use", cases like Kamijou Touma in which no psychic powers can be detected - in other words, a truly powerless person - are conversely rare.

There is also the category of Level 6 (Absolute Powers (絶対能力)) which represents what is further beyond all that. However, nobody has been able to achieve it yet, with many institutes in the city trying to find ways to attain it, such as Radio Noise. It has been stated that only Accelerator can achieve Level 6.