As a first thought I've used overlapping transparent circles or a venn diagram to illustrate the abstract sharing of knowledge and overlaps that exist in the related disciplines of phsychology and education.
I've purposefully kept away from anything obviously psychological as blatant icons might put some patients or customers off. Instead I've gone with something very simple and yet unique to gain greater visual recognition value in a logo.
The colours are gradients of the one PMS blue which would allow for economical one colour printing... very handy for internal use forms and professional stationery.
Looking forward to your thoughts as I evolve this further.
I really like this logo concept. On a practical level, I can not fault it and their is nothing I do not like about it. It just lacks a little excitement or flare. Very interested in your revisions
#19 is an evolution of #3. The spheres are now three dimensional and they take on a floating lightness that holds no point of tension or stress. Coupled with the much more relaxed typography, the balloon or bubble like nature of the spheres might serve to take the viewer subconsciously back to the wonderment and awe of childhood where learning is instinctual and the paths for adulthood are paved.
#20 is a first thought at using a bird in flight to represent taking off. This might be aligned to taking on new knowledge or letting go of things that hold us back. The ground is very near, signifying the act of launching into new flight.
These could probably both do with some refinement, but again I look forward to you feedback to help evolve it in the direction that most suits you.
I like what you have done with the circles in entry 19, however I would prefer a slightly more formal text with my slogan back in more like entry 3 Maybe greater contrast in colour shading to give more depth to the design.