Database: california_schools (difficulty: simple)
Question: What is the Percent (%) Eligible Free (K-12) in the school administered by an administrator whose first name is Christopher. List the district code of the school.
SQL: SELECT T1.`Free Meal Count (K-12)` * 100 / T1.`Enrollment (K-12)`, T1.`District Code` FROM frpm AS T1 INNER JOIN schools AS T2 ON T1.CDSCode = T2.CDSCode WHERE T2.AdmFName1 = 'Christopher'