Species Technological Classification

Each species has it's own unique technological development - some have vast civlizations that span huge chunks of the Galaxy, some own sparsely populated colonies while keeping the majority of population in the homeworld, some have barely figured FTL travel, and some are tribal agrarian societies.

Karashev Scale
first proposed in 1964 by the Soviet astronomer Nikolai Kardashev, and used by the systems alliance until 190 years later, The Kardashev scale is the first cosmic-perspective method of measuring a civilization's level of technological advancement, based on the amount of energy a civilization is able to utilize. The scale has three designated categories called Type I, II, and III. A Type I civilization uses all available resources impinging on its home planet, Type II harnesses all the energy of its star, and Type III of its galaxy. The scale is only hypothetical, but it puts energy consumption in a cosmic perspective. Various extensions of the scale have been proposed since, from a wider range of power levels (types 0, IV and V) to the use of metrics other than pure power.

Technological Achiement Tier System
The Forerunners categorized the Technological Advancement of civilizations into Tiers.[1] This system was later adopted by the Covenant. All life and civilizations in the Universe fall into one of the categories.[2] The lower the Tier number, the more advanced the civilization's technology is/was.