I'd like to convey that KnowProgress is on the cutting edge - using advanced research and data in learning science, and employing technology effectively to create superior learning experiences. Learners will be engaged with what they learn, immediately be able to apply their learning to their real life, and remember what they learned for a long time.
In the sample image 1, I like the idea of the key hole in someone's head. Would be nice to better convey that person is at the head of the pack, because their potential to learn has been unlocked. I also like the digital feel of the image too.
I like the feel of sample image #2. I like the idea of a person having a complex/high tech universe in the palm of their hand. (I don't like the business suit because I don't want it to be gendered or specifically business-oriented.)
I like the feel of sample image #3 (a neuron) because it feels high tech, it can also be a visual for a complex web of knowledge, and it also can feel like a pathway to follow to knowledge.
Sample image 4 is the current logo - I do like the tree with arrows in concept but it feels a little too cute and doesn't convey the technology aspect / something on the cutting edge.