Hello! I am Fenia (officially, Efthimia). I am Assistant Professor at the Leiden Institute of Advanced Computer Science, working at the Programming Education Research Lab. I am also affiliated with the Department of Computer Science of the Open University of the Netherlands.

I recently organized, together with George Fletcher and Daphne Miedema, the DataEd SIGMOD workshop on Data Systems Education.


I do research in computing education and software engineering. My research interests include collaborative learning, data science education, teaching approaches, informal and lifelong education, and gender diversity. I used to do research on trust management and networks security.

Here is a list of selected publications. For a full list, you can check google scholar.

  • Daphne Miedema, George H. L. Fletcher, Efthimia Aivaloglou. Expert Perspectives on Student Errors in SQL. ACM Trans. Comput. Educ, 2022 (full paper)
  • Greg Alpár, Sabiha Yeni, Efthimia Aivaloglou, Felienne Hermans. Can Math Be a Bottleneck? Exploring the Mathematics Perceptions of Computer Science Students. EDUCON 2022 (full paper)
  • Daphne Miedema, George H. L. Fletcher, Efthimia Aivaloglou. So many brackets! An analysis of how SQL learners (mis) manage complexity during query formulation. In ICPC ’22 (full paper)
  • Anna van der Meulen, Felienne Hermans, Efthimia Aivaloglou, Marlies Aldewereld, Bart Heemskerk, Marileen Smit, Alaaeddin Swidan, Charlotte Thepass, Shirley de Wit. Who participates in computer science education studies? A literature review on K-12 subjects. PeerJ Computer Science 2021 (full paper)
  • Shirley de Wit, Felienne Hermans, Efthimia Aivaloglou. Children’s Implicit and Explicit Stereotypes on the Gender, Social Skills, and Interests of a Computer Scientist. In ICER ’21 (dataset, full paper)
  • Daphne Miedema, Efthimia Aivaloglou, George H. L. Fletcher. Identifying SQL Misconceptions of Novices: Findings from a Think-Aloud Study. In ICER ’21 (summary, presentation, full paper)
  • Efthimia Aivaloglou, Anna van der Meulen. An Empirical Study of Students’ Perceptions on the Setup and Grading of Group Programming Assignments. ACM Trans. Comput. Educ, 21(3), March 2021 (summary, pdf)
  • Anna van der Meulen, Efthimia Aivaloglou. Who Does What? Work Division and AllocationStrategies of Computer Science Student Teams. ICSE SEET 2021 (summary, pdf)
  • Ad Zeevaarders, Efthimia Aivaloglou. Exploring the Programming Concepts Practiced by Scratch Users: An Analysis of Project Repositories. IEEE EDUCON2021 (pdf)
  • Sabiha Yeni, Efthimia Aivaloglou, and Felienne Hermans. To Be or Not to Be a Teacher? Exploring CS Students’ Perceptions of a Teaching Career. In Koli Calling ’20 (pdf)
  • Jan Jaap Sandee and Efthimia Aivaloglou. GitCanary: A Tool for Analyzing Student Contributions in Group Programming Assignments. In Koli Calling ’20 (pdf)
  • Efthimia Aivaloglou and Felienne Hermans. How is programming taught in code clubs? Exploring the experiences and gender perceptions of code club teachers. In Koli Calling ’19 (summary, pdf, presentation recorded at the Cambridge Computing Education Research Symposium 2020)
  • Efthimia Aivaloglou and Felienne Hermans. Early Programming Education and Career Orientation: the Effects of Gender, Self-Efficacy, Motivation and Stereotypes. ACM SIGCSE 2019 (summary, pdf)
  • Felienne Hermans, Alaaeddin Swidan, Efthimia Aivaloglou and Marileen Smit. Thinking out of the box: comparing metaphors for variables in programming education. WiPSCE ’18 (summarypdf)
  • Felienne Hermans, Alaaeddin Swidan and Efthimia Aivaloglou. Code phonology: an exploration into the vocalization of code. ICPC ’18 (summary, pdf)
  • Efthimia Aivaloglou, David Hoepelman, and Felienne Hermans. Parsing excel formulas: A grammar and its application on four large datasets. Journal of Software: Evolution and Process, 29(12), 2017 (pdf)
  • Guanliang Chen, Dan Davis, Markus Krause, Efthimia Aivaloglou, Claudia Hauff, and Geert-Jan Houben. Can learners be earners? investigating a design to enable MOOC learners to apply their skills and earn money in an online market place. IEEE Transactions on Learning Technologies, 2016
  • Efthimia Aivaloglou, Felienne Hermans, Jess Moreno-Len, and Gregorio Robles. A dataset of scratch programs: Scraped, shaped and scored. In MSR 2017 (pdf)
  • Felienne Hermans and Efthimia Aivaloglou. Teaching software engineering principles to k-12 students: A MOOC on scratch. In ICSE ’17 (summarypdf)
  • Felienne Hermans and Efthimia Aivaloglou. To Scratch or not to Scratch?: A controlled experiment comparing plugged first and unplugged first programming lessons. WiPSCE ’17 (summary, pdf)
  • Gregorio Robles, Jess Moreno-Len, Efthimia Aivaloglou, and Felienne Hermans. Software clones in scratch projects: on the presence of copy-and-paste in computational thinking learning. In IWSC 2017 (pdf)
  • Efthimia Aivaloglou and Felienne Hermans. How kids code and how we know: An exploratory study on the scratch repository. In ICER ’16 (pdf)
  • Felienne Hermans and Efthimia Aivaloglou. Do code smells hamper novice programming? a controlled experiment on scratch programs. In ICPC 2016 (pdf)
  • Felienne Hermans, Bas Jansen, Sohon Roy, Efthimia Aivaloglou, Alaeddin Swidan, and David Hoepelman. Spreadsheets are code: An overview of software engineering approaches applied to spreadsheets. In SANER 2016 (pdf)
  • Sohon Roy, Felienne Hermans, Efthimia Aivaloglou, Jos Winter, and Arie van Deursen. Evaluating automatic spreadsheet metadata extraction on a large set of responses from MOOC participants. In SANER 2016 (pdf)
  • Felienne Hermans, Efthimia Aivaloglou, and Bas Jansen. Detecting problematic lookup functions in spreadsheets. In VL/HCC 2015 (pdf)
  • Efthimia Aivaloglou, David Hoepelman, and Felienne Hermans. A grammar for spreadsheet formulas evaluated on two large datasets. In SCAM 2015 (pdf)


I am teaching/have taught the following courses:

Project supervision

PhD researchers

MSc students

If you are interested to do an MSc thesis with me, please contact me. You can choose any of the currently available topics listed on the PERL web site, or propose one that I can supervise.

  • Gerralt Gottemaker: Automated feedback on the code quality of student projects.
  • Marco Jansen (graduated in February 2022): Grading software engineering group projects based on individual contributions.
  • Jelmer Golsteijn (graduated in July 2022): Identifying age and gender and analyzing their relation to programming behaviour of Scratch users.
  • Tanishq Likhi (graduated in February 2022): Effects of the power distance index on multicultural software engineering teams.
  • Zaher Alyousef (graduated in December 2021): Challenges in low code development.
  • Ben Nieuwhof (graduated in July 2021): Attractiveness of Open Source Software projects to new contributors.
  • Shangyi Tang (graduated in December 2020): Clustering Scratch programs.
  • Jan Jaap Sandee (graduated in October 2020): Using metrics mined from software repositories to assist in individual guidance of students’ group programming projects.
  • Ad Zeevaarders (graduated in July 2020): Exploring the learning progression of Scratch users.
  • Orla Dijkink (graduated in April 2020): Occurrence of code smells in low-code.

Tools & Datasets


Email address: e.aivaloglou@liacs.leidenuniv.nl

Visiting address: Snellius Building – Room 104a, Niels Bohrweg 1, 2333 CA, Leiden