That's not overconfident, I'm lead to conclude that you have advanced science knowledge.
I'm thinking of times where I went to the library to dig deeper on a topic and discovered a huge and complex topic just laying in wait.
What I am getting at is that if you have just intermediate knowledge in a bunch of places, I think it lends itself to sensing that you're just a paramecium stuck to the side of some N-dimensional construct. There's so much. I had a professor who was the expert in the second excited state of Helium-3. That was his thing. Just a single needle in the whale-sized blowfish of physics.
I do to and unquestionably I am beginner level.
Each scientific field has specialised and become so dense with knowledge that even new graduates in that field would barely be classed as intermediate.
* Surveys EB, Pew and GSS are publicly available and data and details can be found in refs. [27],[28],[29], respectively.
\* take the interactive Pew survey (11 questions) here: https://www.pewresearch.org/science/quiz/science-knowledge-quiz/
* The Fernbach study was published in ref. [9] and the authors made the data available.* Lackner survey data are available at: https://doi.org/10.5281/zenodo.7920776
[27]: Bauer, M. W., Shukla, R. & Kakkar, P. Public Understanding of Science in Europe 1989–2005—A Eurobarometer Trend File (GESIS, 2012); https://www.gesis.org/en/eurobarometer-data-service/search-d...
[28]: Smith, T. W., Davern, M., Freese, J. & Morgan, S. L. General Social Surveys, 1972–2018 (NORC, 2019); https://gss.norc.org/get-the-data
[29]: Funk, C., Kennedy, B., Johnson, C., Hefferon, M. & Thigpen, C. L. American Trends Panel Wave 42 (Pew Research Center, 2019); https://www.pewresearch.org/science/dataset/american-trends-...
[9]: Fernbach, P. M., Light, N., Scott, S. E., Inbar, Y. & Rozin, P. Extreme opponents of genetically modified foods know the least but think they know the most. Nat. Hum. Behav. 3, 251–256 (2019). https://www.nature.com/articles/s41562-018-0520-3
Even then, the 2019 Pew article is depressing reading: https://www.pewresearch.org/science/2019/08/02/partisanship-...
If you test high school concepts then if you are shaky about high school concepts that applies to you. People who have no clue about high school and people who understand high school well will be less overconfident on that test.
Or if you talk about college algorithms, then that is the basis for intermediate knowledge. An average comp sci grad will be the most overconfident, a person who never studied algorithms and a person who teaches algorithms for years will be less overconfident on that test.