In Pennsylvania, the Offense Gravity Score is a number from 1 to 15 that the state assigns to every criminal offense based on how serious the conduct is. It is one half of the sentencing equation. The other half is your Prior Record Score. A judge finds where those two numbers intersect on a grid called the sentencing matrix, and the cell at that intersection contains the recommended minimum prison sentence in months. Knowing your OGS is the first step toward knowing what kind of sentence a conviction is likely to carry.
How a Score Gets Assigned to Your Charge
The OGS is fixed to the specific statutory section you are convicted under, so every defendant facing the same charge starts from the same baseline. A score of 15 is reserved for first-degree and second-degree murder. Every other criminal charge falls between 1 and 14. Attempted murder with serious bodily injury carries an OGS of 14; attempted murder without serious bodily injury carries an OGS of 13.1Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.3 – Offense Gravity Score General
Most offenses have a specific OGS listed in the guidelines’ offense listing tables. A third-degree misdemeanor retail theft sits at 1. A first-degree felony robbery can reach 10 or higher depending on the circumstances. When a crime does not have an individually assigned score, the guidelines fall back on “omnibus” defaults keyed to the grading of the offense:1Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.3 – Offense Gravity Score General
- Felony 1 with a statutory maximum over 20 years: OGS 10
- Felony 1: OGS 8
- Felony 2: OGS 7
- Felony 3: OGS 5
- Misdemeanor 1: OGS 3
- Misdemeanor 2: OGS 2
- Misdemeanor 3: OGS 1
Those defaults only apply when nothing more specific exists. Many offenses carry OGS values that differ from their grading’s default, so check the offense listing for your exact statute before relying on the omnibus number.
The Other Half: Prior Record Score
Your OGS tells the court how serious the current offense is. Your Prior Record Score tells the court how serious your criminal history is. Neither number tells the full story alone.
Prior convictions and juvenile adjudications earn points on a sliding scale: four points each for murder, attempted murder, enumerated crimes of violence, and any prior offense with an OGS of 11 or higher; three points for other first-degree felonies; two points for second-degree felonies and certain felony drug offenses; and one point for most other felonies, weapons-related misdemeanors, child endangerment, and DUIs after the first. Lower-level misdemeanors accumulate in batches rather than one at a time.2Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.7 – Prior Record Score Guideline Points Scoring
The total lands you in one of eight categories. Six are numerical, 0 through 5, with points capped at five. Two are special designations for repeat serious offenders:3Pennsylvania Code and Bulletin. Pennsylvania Code 204 Pa. Code 303.4 – Prior Record Score Categories
- RFEL (Repeat Felony 1/Felony 2 Offender), when prior first- and second-degree felony convictions total six or more points.
- REVOC (Repeat Violent Offender), when you have two or more prior four-point convictions and your current offense carries an OGS of 9 or higher.
REVOC is the most severe category. If you qualify for both, REVOC takes priority. Either designation pushes you into significantly harsher ranges on the matrix.
Reading the Sentencing Matrix
The matrix is a grid with the OGS on one axis and the Prior Record Score on the other. The intersecting cell contains the recommended minimum sentence in months.4Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.16 – Basic Sentencing Matrix Each cell gives three ranges:5Pennsylvania Commission on Sentencing. Sentencing
- Standard range, the recommended sentence under normal circumstances.
- Aggravated range, a higher recommendation when facts are particularly egregious.
- Mitigated range, a lower recommendation when circumstances lessen the seriousness of the crime.
Here is a detail that trips people up. The matrix recommends a minimum sentence, not a total sentence. Pennsylvania uses indeterminate sentencing for most offenses, so the judge imposes both a minimum and a maximum term. You become eligible for parole once the minimum is served. By law the minimum cannot exceed half of the maximum. A three-year minimum therefore requires a maximum of at least six years, and the judge can set the maximum anywhere up to the statutory cap for that offense grade.
Those statutory caps limit how high any sentence can go, no matter what the matrix recommends:
- Felony 1: 20 years maximum6Pennsylvania General Assembly. Pennsylvania Consolidated Statutes Title 18 Chapter 11 Section 1103 – Sentence of Imprisonment for Felony
- Felony 2: 10 years maximum
- Felony 3: 7 years maximum
- Misdemeanor 1: 5 years maximum7Pennsylvania General Assembly. Pennsylvania Title 18 Chapter 11 – Sentence of Imprisonment for Misdemeanors
- Misdemeanor 2: 2 years maximum
- Misdemeanor 3: 1 year maximum
Because the longest legal minimum is half the statutory maximum, a third-degree felony with a seven-year cap translates to a maximum guideline minimum of 42 months. If the matrix recommends a higher minimum than the grade allows, the recommendation is capped at the statutory limit.8Legal Information Institute. Pennsylvania Code 204 Pa. Code 303a.5 – Offense-Specific Sentence Recommendations
Enhancements That Push the Recommendation Higher
Certain facts about how the crime was committed send the judge to a harsher matrix. The most common enhancements involve deadly weapons.
Deadly Weapon Possessed
If you possessed a deadly weapon during the offense, the court applies the Deadly Weapon Enhancement/Possessed matrix, which adds months to both ends of the standard range:9Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.10 – Guideline Sentence Recommendations Enhancements
- OGS 1 through 4: adds 3 months
- OGS 5 through 8: adds 6 months
- OGS 9 through 14: adds 9 months
Deadly Weapon Used
If you actually used the weapon, the add-ons double:9Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.10 – Guideline Sentence Recommendations Enhancements
- OGS 1 through 4: adds 6 months
- OGS 5 through 8: adds 12 months
- OGS 9 through 14: adds 18 months
Carrying a concealed firearm during a drug deal is possession. Pointing it at someone is use. Prosecutors must establish those facts at trial or through a plea before the enhancement applies.
Victim-Related Enhancements
Some victim characteristics also increase the recommendation. Third-degree murder of a victim under 13 adds 24 months to the lower limit of the standard range and pushes the upper limit to the statutory maximum, and the enhanced portion runs consecutively to any other sentence. Human trafficking offenses involving a victim under 13 add one point to the OGS itself, which shifts the entire matrix calculation.9Legal Information Institute. Pennsylvania Code 204 Pa. Code 303.10 – Guideline Sentence Recommendations Enhancements
When a Mandatory Minimum Overrides the Guidelines
The matrix produces a recommendation. A mandatory minimum statute is a floor. When the mandatory minimum attached to your specific charge is higher than the guideline recommendation, the mandatory minimum wins and the court cannot go lower. When the guideline recommendation is already higher, the court follows the guidelines.10Pennsylvania Board of Probation and Parole. Pennsylvania Sentencing Information Defendants are sometimes blindsided by this: you can calculate a reasonable range from the matrix only to discover a mandatory minimum pushes the floor well above it.
When a Judge Can Sentence Outside the Guidelines
The matrix recommendation is not binding. A judge can sentence above or below the guideline ranges when the circumstances justify it, but every departure requires a written statement of reasons submitted to the Commission on Sentencing. Failing to provide that written explanation is grounds for vacating the sentence.11Pennsylvania General Assembly. Pennsylvania Title 42 Chapter 97 – Sentencing
Either side can seek appellate review of a sentence it believes is inappropriate. An appellate court will vacate a sentence if it finds the sentence is both outside the guidelines and unreasonable, considering the nature of the offense, the defendant’s history, any presentence investigation, the sentencing judge’s specific findings, and the Commission’s guidelines.12Pennsylvania General Assembly. Pennsylvania Consolidated Statutes Title 42 Chapter 97 Section 9781 – Appellate Review of Sentence Sentences inside the standard, aggravated, or mitigated range are much harder to challenge; sentences outside those ranges face closer scrutiny, which is why the written statement requirement exists.