This non-experimental correlational quantitative research study was conducted to examine the relationship between the percentage of voluntary live synchronous virtual lesson attendance (LVLA) and the reading comprehension skill growth of sixth through eighth-grade English Language Arts (ELA) students enrolled in a Pennsylvania full-time online public cyber charter school. Existing literature presented concerns about reading achievement outcomes for middle school students in full-time virtual charter schools, as well as identified the need for further research into synchronous online teaching as an effective instructional practice. This study analyzed archival assessment and demographic data from the 2022-2023 school year. As a result of the attendance policy at the school site that permitted students to attend synchronous instructional sessions or watch a recording asynchronously, each statistical test was conducted including and excluding student cases with zero LVLA percentage. This study found a weak, but statistically significant relationship between attendance and growth when including and excluding cases with zero LVLA. Simple regression found attendance percentage was predictive of growth when excluding zero LVLA cases, although the contribution of LVLA was minimal. Analysis of descriptive statistics highlighted a higher median growth score for students who attended a greater percentage of voluntary live synchronous virtual lessons. The findings of this study contributed meaningful quantitative data to the existing gap in the literature about cyber charter middle school students and reading comprehension skill growth, as well as evidence-based recommendations to improve cyber charter school teaching and instructional policies. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]