Processes multiple years and combines them into a panel dataset.
Examples
if (FALSE) { # \dontrun{
configs <- list(
classroom_config("2021-2022", "data/FCPK Classroom Details 21-22.xlsx"),
classroom_config("2022-2023", "data/FCPK Classroom Details 22-23.xlsx"),
classroom_config("2023-2024", "data/FCPK Classroom Details 23-24.xlsx"),
classroom_config("2024-2025", "data/24-25 Classroom Details.xlsx")
)
result <- classroom_process_years(configs)
result$panel$data
} # }