If Scotland Became Independent, Would the British Monarch Remain Head of State?

Unlikely. The 2014 independence white paper proposed retaining the monarch as Queen/King of Scots (a personal union, like Canada), but the SNP leadership has since signaled a republican preference post-independence. A future referendum or constitutional convention would decide—options include:

• Constitutional monarchy (shared monarch)
• Separate Scottish monarchy (new royal house)
• Parliamentary republic (elected president)

No automatic continuity; it's a political choice for an independent Scotland.